本文以实例讲述了DEDECMS实现在标签中嵌套调用SQL的方法，对于dedecms的二次开发来说非常简单实用，实例代码如下所示：
{dede:field.id runphp='yes'}
$tsql = new DedeSql(false);
$tsql->SetQuery("select * from dede_archives where id=@me");
$tags = "";
$tsql->Execute('t');
while($row = $tsql->GetArray('t',MYSQL_ASSOC)){
$tags .= $row['title'];
}
@me = $tags;
{/dede:field.id}
$tsql = new DedeSql(false);
$tsql->SetQuery("select * from dede_archives where id=@me");
$tags = "";
$tsql->Execute('t');
while($row = $tsql->GetArray('t',MYSQL_ASSOC)){
$tags .= $row['title'];
}
@me = $tags;
{/dede:field.id}
